Use document references instead of anchors

[GGP1]

Description

Replaces AWS supported services index :ref references to :doc: and removed their related anchors from the different files.

Checks

Docs building

• Compiles without warnings.

Build

...
Running Sphinx v7.0.1
loading translations [en-US]... not available for built-in messages
loading pickled environment... done
building [mo]: targets for 0 po files that are out of date
writing output... 
building [html]: targets for 1 source files that are out of date
updating environment: 0 added, 1 changed, 0 removed
reading sources... [100%] cloud-security/amazon/services/supported-services/index
Copying static files for wazuh-doc-images...[100%] img/loading.gif             
looking for now-outdated files... none found
pickling environment... done
checking consistency... done
preparing documents... done
writing output... [100%] index                                                 x
generating indices... done
writing additional pages... not_found moved-content search done
copying static files... done
copying extra files... done
dumping search index in English (code: en)... done
dumping object inventory... done
build succeeded.

The HTML pages are in home/python/build/html.
[sphinx-autobuild] Serving on http://0.0.0.0:8000

Code formatting and web optimization

• Uses three spaces indentation.
• Adds or updates meta descriptions accordingly.
• Updates the redirects.js script if necessary (check this guide).

Writing style

• Uses present tense, active voice, and semi-formal registry.
• Uses short, simple sentences.
• Uses bold for user interface elements, italics for key terms or emphasis, and code font for Bash commands, file names, REST paths, and code.

[nico-stefani]

LGTM